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Looking for schematics of digital frequency synthesizer

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mamoon

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frequency synthesizer

i need to make a digital frequnecy synthesizer for FM range (88MHZ-108MHZ) with 100khz step. i need the scehmatic. can i use LM566 as vco if yes what should b tha timing circuit. plz help me thanx
 

cwt

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frequency synthesizer

Hi there, currently i am facing the similar problem with you. Whats your frequency synthesizer going to do? Modulate signal as FM-modulated output signal?
 

eng_ahmed22

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Re: frequency synthesizer

try to use a PLL. it used as frequency synthesizer. but i dont know the frequency range. I think u have to refere to data sheet
have a good day
Ahmed
www.i-g.org
 

mamoon

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Re: frequency synthesizer

it will just gona synthesize any freq in this range with 100 khz step i donot have any prob regarding pll but there is no ic of vco for this range :(
 

fobyellow

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Re: frequency synthesizer

try to find some service manual of the Full band receiver by kenwood etc, the LO schem may help.

or else try a DDS? like AD9951, get more information at www.analog.com
 

satria02

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Re: frequency synthesizer

any body ever use AD9951?

can you share your experience using AD9951?

thanks
 

KJ6EAD

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I'm not sure what you need, just a VCO or a complete transmit or receive capability. Here are some links:
**broken link removed**
**broken link removed**
**broken link removed**

I just realized that this thread is 5 years old. :oops:
 
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mesterul

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Hello!
I realized 1 month ago an interface to control TSA 5522 for what you search. The firmware allows you to select the steps (50 - 1000kHz).
 

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  • SINTEZA FCV 87-108.pdf
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  • tsa_5512_mic.txt
    5.6 KB · Views: 10

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